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    Systematic review and meta-analysis of the application of microorganisms for the Cr(VI) removal from tannery effluents

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    Date
    2021-07
    Author
    Aquije Morey, Llajandra
    Zanabria Chuchon, Ricardo D.
    Castañeda Olivera, Carlos A.
    Jave Nakayo, Jorge L.
    Benites Alfaro, Elmer G.
    Cabello Torres, Rita J.
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    Abstract
    The application of microorganisms as bioadsorbents for the treatment of industrial effluents is shown to be an efficient and environmentally viable technology, since it does not generate toxic products. In the present systematic review and meta-analysis, information was gathered about the capacity of microorganisms to remove hexavalent chromium (Cr(VI)) from tannery effluents. In addition, the different variables of the bioadsorption process such as pH, microorganism dose, incubation time, initial metal concentration and final metal concentration were investigated. These parameters were considered according to each species studied in the included investigations. For the meta-analysis, Review Manager 4.0 (RevMan) software was used through the fixed effect model with a 95% confidence interval. The results revealed that the included investigations showed a considerable statistical heterogeneity (I² = 87%) and that the application of microorganisms for the Cr(VI) removal from tannery effluents showed greater efficiency at lower initial concentrations of the metal. It was also observed that the microorganisms used in the included investigations showed percentages of Cr(VI) removal higher than 70% for the treatment of tannery effluents.
    URI
    http://dx.doi.org/10.18687/LACCEI2021.1.1.145
    http://axces.info/handle/10.18687/20210101_145
    URI Others
    http://laccei.org/LACCEI2021-VirtualEdition/meta/FP145.html
    Copyright
    https://laccei.org/blog/copyright-laccei-papers/
    Track
    Biotechnology, Bioinformatics and Nanotechnology
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